dmaengine: idxd: fix lockdep warning on device driver removal

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Jacob reported that with lockdep debug turned on, idxd_device_driver
removal causes kernel splat from lock assert warning for
idxd_device_wqs_clear_state(). Make sure
idxd_device_wqs_clear_state() holds the wq lock for each wq when
cleaning the wq state. Move the call outside of the device spinlock.

Reported-by: Jacob Pan <jacob.jun.pan@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/165231364426.986304.9294302800482492780.stgit@djiang5-desk3.ch.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

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Dave Jiang 2022-05-11 17:00:44 -07:00 • committed by Vinod Koul

parent 42a1b73852

commit cf4ac3fef3

1 changed files with 7 additions and 7 deletions

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drivers/dma/idxd/device.c

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